FR971748A - Improvements to the grinding and polishing processes of corners, especially corners used in optics - Google Patents
Improvements to the grinding and polishing processes of corners, especially corners used in opticsInfo
- Publication number
- FR971748A FR971748A FR971748DA FR971748A FR 971748 A FR971748 A FR 971748A FR 971748D A FR971748D A FR 971748DA FR 971748 A FR971748 A FR 971748A
- Authority
- FR
- France
- Prior art keywords
- corners
- optics
- grinding
- polishing processes
- polishing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/0018—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor for plane optical surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US971748XA | 1943-08-03 | 1943-08-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR971748A true FR971748A (en) | 1951-01-22 |
Family
ID=22261768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR971748D Expired FR971748A (en) | 1943-08-03 | 1948-02-27 | Improvements to the grinding and polishing processes of corners, especially corners used in optics |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR971748A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4950302A (en) * | 1987-08-17 | 1990-08-21 | Wella Aktiengesellschaft | Process for the production of 2,5-diamino-6-nitro-pyridine derivatives, their use in hair dye compositions and new 2,5-diamino-6-nitropyridine derivatives |
-
1948
- 1948-02-27 FR FR971748D patent/FR971748A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4950302A (en) * | 1987-08-17 | 1990-08-21 | Wella Aktiengesellschaft | Process for the production of 2,5-diamino-6-nitro-pyridine derivatives, their use in hair dye compositions and new 2,5-diamino-6-nitropyridine derivatives |
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